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BAA Observing calendar

α-Capricornid meteor shower

Thursday, 2018, August 2 - 01:00

Dominic Ford – originally published on

The α–Capricornid meteor shower will reach its maximum rate of activity on 2 August 2018. Some shooting stars associated with the shower are expected to be visible each night from 15 Jul to 20 Aug.

The maximum rate of meteors expected to be visible from a dark location is around 5 per hour (ZHR). The Moon will be 20 days old at the time of peak activity, and so will present significant interference in the pre-dawn sky.

The radiant of the α–Capricornid meteor shower is at around right ascension 19h40m, declination -10°, as shown by the green cross on the planetarium above. At midnight, it appears 28° above your southern horizon from London (click to change). All of the meteors will appear to be travelling directly outward from this point, as indicated by the white lines drawn above.

To see the most meteors, the best place to look is not directly at the radiant itself, but at any dark patch of sky which is around 30–40° away from it. It is at a distance of around this distance from the radiant that meteors will show reasonably long trails without being too spread out.

The details of this observing event were provided courtesy of